摘要:
The invention relates to processes for preparing rasagiline mesylate that avoid the use of alcohol solvents, thereby producing rasagiline mesylate free of any alkyl mesylates, including isopropyl mesylate. The invention further relates to processes for purifying rasagiline mesylate to obtain a product free of alkyl mesylates, and to the thus obtained rasagiline mesylate.
摘要:
The invention relates to processes for preparing rasagiline mesylate that avoid the use of alcohol solvents, thereby producing rasagiline mesylate free of any alkyl mesylates, including isopropyl mesylate. The invention further relates to processes for purifying rasagiline mesylate to obtain a product free of alkyl mesylates, and to the thus obtained rasagiline mesylate.
摘要:
The invention relates, in general, to an improved process for converting compounds of Formula II (below) to compounds of Formula III (below), which are key intermediates for the synthesis of ezetimibe, or to ezetimibe itself, wherein in Formulas II and III, R represents hydrogen, alkyl, or a hydroxyl protecting group (e.g., benzyl group, a substituted benzyl group, or a silyl group). The invention further includes the use of the described process and the use of compounds of Formula III made by the described process for the preparation of ezetimibe.
摘要:
The present invention relates to a method for differentiating and quantifying the enantiomers, thereby determining the enantiomeric purity, of darifenacin and its intermediate compounds and salts thereof. In addition, the invention relates to a method for differentiating and quantifying the enantiomers, thereby determining the enantiomeric purity of compounds of formula (I): wherein Y is hydrogen or a substituent of the formula: including the differentiation and quantification of compounds of formula (I) of varying enantiomeric purity from their corresponding enantiomers. The invention further relates to a process for preparing enantiomerically pure darifenacin using enantiomerically pure starting compounds which have been previously differentiated and quantified according to the method of the invention.